tos tot tou tpc tpe tpi tpl tpo tpp tpq tpr tps tpt tpu tqo trc tre tri trl tro trp trq trr trs trt tru tsc tse tsi tsl tso tsp tsq tsr tss tst tsu ttc tte tti ttl tto ttp ttr tts ttt ttu tuc tue tui tul tuo tup tur tus tut tuu ucc uce uci ucl uco ucp ucr ucs uct ucu uec uee uei uel uep uer ues uet uic uie uii uil uio uip uiq uir uis uit uiu ulc ule uli ull ulo ulp ulr uls ult ulu uoc uoe uol uoo uop uor uos uot up- upc upe upi upo upp upr ups upt upu ur- urc ure uri url uro urp urr urs urt uru usc use usi usl uso usp usr uss ust usu utc ute uti utl uto utp utr uts utt utu uuc uue uur uus uut uuu